CN112016903A - Three-dimensional assembly operation instruction data management platform and work flow thereof - Google Patents

Abstract

The invention relates to the technical field of three-dimensional assembly data management, and discloses a three-dimensional assembly operation instruction data management platform, which comprises a data preparation layer, a data layer, an application layer and a presentation layer; the data preparation layer comprises the steps of manufacturing a three-dimensional assembly operation instruction book and carrying out lightweight processing on the three-dimensional model; the data layer consists of three-dimensional assembly operation instruction data and light three-dimensional model data; the application layer comprises a service management module, a user management module and a data management module; the presentation layer implements a centralized presentation based on the application layer. The invention also discloses a working process of the three-dimensional assembly operation instruction data management platform. The three-dimensional assembly operation instruction data management platform and the working process thereof enable the data query of the three-dimensional assembly operation instruction to be rapid, visual and efficient, the instruction issuing process to be more standard, transparent and open, the authority management to be more clear and the safety protection to be more complete.

Description

3D assembly work instruction data management platform and its workflow

technical field

The invention relates to the technical field of three-dimensional assembly data management, in particular to a three-dimensional assembly operation instruction data management platform and its workflow.

Background technique

The traditional assembly process documents lack the support of the data management platform. The assembly process documents are designed and approved by the design department and sent to the assembly production line. The management mode is that each project department establishes an assembly document management system according to the work scope of its own department, and the assembly process documents are scattered. It is stored in the server or employee PC of each department, and the synchronization of assembly process file changes between the design department and the assembly line is poor. The current assembly file management mode has the following problems:

1. The quantity is huge and the query is too slow: For large and medium-sized projects, the number and version of the assembly process files are complex, and the files are scattered in different design departments and assembly production lines, and the query takes a long time;

2. Decentralized storage can easily lead to information islands: a. In the process of data and information interaction, multiple accesses and calls are often required to achieve this. The information transmission efficiency is low and it is easy to cause assembly data loss; b. The update is not synchronized, and the information cannot be Synchronous update, or it takes a long time to update, resulting in errors and ambiguity in information transmission; c. Due to decentralized storage, when project staff are transferred, it may cause incomplete handover, relevant experience and knowledge cannot be continued, and assembly files are easily lost;

3. Unclear authority control, easy to leak: Assembly file authority management is missing, including authority management of different project participants, authority management of different sub-departments, user authority management at different levels, etc. Different authority has different operation rights for different assembly files, such as file The rights of viewing, editing, downloading, changing, reviewing, approving, deleting, etc. are unclear, and the control of rights is unclear, which can easily lead to information security problems such as leakage or tampering.

At the same time, the assembly process documents are generally compiled in a two-dimensional environment, using a combination of plan drawings and text descriptions, and the data mostly stay in the state of two-dimensional drawings. The main problems are: (1) The intuition is not enough, and the process design , The understanding ability of optimizers and on-site assembly operators is required to be high; (2) The granularity of process expression is too coarse, the visualization of process information is insufficient and the process continuity is not enough, the assembly sequence and assembly path mainly rely on past experience, lack of visual evaluation in accordance with.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a three-dimensional assembly work instruction data management platform and its workflow in view of the deficiencies of the above technologies, so that the data query of the three-dimensional assembly work instruction is fast, intuitive, and efficient, and the instruction release process is more standardized, transparent, and more efficient. Openness, more clear rights management, and more complete security protection.

In order to achieve the above purpose, the 3D assembly operation instruction data management platform designed by the present invention includes a data preparation layer, a data layer, an application layer and a presentation layer. Assembly operation instructions, and lightweight processing of the three-dimensional model; the data layer is composed of the three-dimensional assembly operation instruction data generated by the data preparation layer and the lightweight three-dimensional model data; the application layer includes a business management module, A user management module and a data management module, the business management module includes publishing process management, change management and progress management for the three-dimensional assembly operation instructions of the data layer, the user management module includes user rights management, the data The management module includes the display, centralized storage and security management of 3D models and 3D assembly work instructions; the presentation layer realizes the centralized display based on the application layer.

Preferably, the production of the 3D assembly work instruction in the data preparation layer is based on the assembly process plan of the 3D assembly and its MBD assembly digital model, the assembly view and the sequence of the process diagram are determined, and the assembly animation or exploded view document is formed. The data The preparation layer also includes lightweight processing of the 3D model.

Preferably, the 3D assembly work instruction data in the data layer includes assembly animation, assembly documents, assembly quality and assembly progress, the lightweight 3D model data includes geometric information and attribute information, and the 3D assembly work instruction data is associated with the relevant data. For the corresponding lightweight three-dimensional model, the association methods include two modes: manual association and automatic association. The steps of automatic association are automatic classification, retrieval, sorting and association.

Preferably, the publishing process of the 3D assembly work instruction in the application layer includes making, inputting, reviewing, approving and publishing, and different operations correspond to users with different permissions, and the user management module in the application layer also includes platform business notifications, news Push, collection and space management, the security management in the application layer includes data encryption, log auditing, authentication, backup and disaster recovery.

Preferably, the presentation layer includes PC platforms based on B/S architecture and C/S architecture, mobile APP and VR, including zooming in, zooming out, panning, roaming, rendering, hiding and sectioning of 3D models, as well as 3D assembly Animation play, pause, double speed, zoom in and out.

A workflow of the three-dimensional assembly work instruction data management platform, comprising the following steps:

6.1 Compile 3D assembly work instructions and lightweight 3D models;

6.2 Associate the 3D assembly work instruction to the corresponding 3D model;

6.3 Upload the 3D assembly work instruction and 3D model to the 3D assembly work instruction data management platform to realize the functions of publishing business management, instruction book and model display, data centralized storage, data security management and user service management.

Preferably, the production process of the three-dimensional assembly work instruction in the data preparation layer includes the following steps:

7.1 Determine the assembly process plan and MBD assembly digital model: Determine the assembly process plan including assembly sequence planning and assembly path planning. The assembly sequence planning combines the model geometry to obtain the best assembly sequence by manual disassembly, and the assembly path planning is drawn up through the process process. Process route, and finally get the assembly process plan. MBD assembly digital model is composed of three parts: design model, annotation and attribute, including product design information, process information and manufacturing information;

7.2 Create Assembly Views: Create assembly views for processes and steps. The assembly view represents a snapshot of the model in the view area, saves attributes and all visible parts in the model animation, and the view records the camera position, the position of the parts in the exploded view, and the view area. properties, adjust the viewing angle as needed, and select an appropriate angle to clearly express the component information;

7.3 Create process diagrams: Create process diagrams for the created assembly views, add dimension information, tolerance information and annotation information on the assembly views, add cut planes as needed to observe the internal structure, use exploded views or through the Digger function in different areas of the model Zoom in, peel off the character to see the internal structure, check after the process diagram is created, including view integrity check, correctness check and view sequence check, and modify improper diagrams in time;

7.4 Making assembly animation: The assembly animation is formed by blanking keyframes, viewing angle keyframes, position keyframes, hotspot keyframes, shape keyframes and cutting plane keyframes. The computer automatically interpolates to complete the transition change of the intermediate state. First, the assembly parts are grouped , and then create a split animation, and finally convert the split animation into an assembly animation and make appropriate adjustments. The assembly animation forms include executable programs, avi videos, and screen recording software recording videos;

7.5: Output 3D assembly work instructions: The output of 3D assembly work instructions is to arrange text descriptions, process diagrams and assembly animations according to a certain layout, and associate them with the corresponding 3D model components.

Preferably, the process of lightweighting the 3D model in the data preparation layer includes the following steps:

8.1 The origin coordinates of the unified model;

8.2 Coding and coloring of unified components;

8.3 Attribute information of the normalized model;

8.4 Geometry conversion and rendering processing;

8.5 Output lightweight model.

Preferably, the optimization of geometric transformation at the micro level adopts parametric geometric description, that is, the weight reduction of components is carried out by means of parameterization; the optimization at the macro level adopts the combination of similarity primitives, that is, the data of a certain primitive is retained, and other positions are The entity is directly referenced and records spatial coordinates.

Preferably, the optimization of rendering processing at the micro level adopts multiple LODs (Levels of Detail), and the fineness of the model is related to the distance, thereby accelerating the rendering speed of primitives and reducing storage; the optimization at the macro level adopts occlusion culling and batch drawing. Eliminate only visible primitives, reduce the number of rendering primitives, and combine objects with the same state into one draw call for batch drawing, balancing CPU and GPU load, and improving rendering fluency.

Compared with the prior art, the present invention has the following advantages:

1. Realize the centralized storage of 3D assembly work instructions and lightweight 3D models, avoid information islands and document loss, and realize the synchronous change of documents and the unification of historical versions;

2. Realize the association and centralized display of 3D assembly work instructions and lightweight 3D models, realize the integration of assembly instructions and models, improve query efficiency, and facilitate publicity and display;

3. Standardized the management of 3D assembly work instructions, including business release process, user rights, change and security management, etc.;

4. The traditional paper-based 2D assembly process documents are replaced by 3D assembly operation instructions with higher visualization and more intuitiveness, which improves the efficiency of assemblers in obtaining assembly information;

5. The 3D model is lightweight, and the lightweight model realizes fast and smooth response during model display and operation.

Description of drawings

1 is a schematic structural diagram of a three-dimensional assembly operation instruction data management platform of the present invention;

Fig. 2 is the overall work flow chart of the invention three-dimensional assembly operation instruction data management platform;

Fig. 3 is the compilation flow chart of the three-dimensional assembly operation instruction book in Fig. 2;

FIG. 4 is a flow chart of the lightweighting of the three-dimensional model in FIG. 2 .

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figure 1, a 3D assembly operation instruction data management platform includes a data preparation layer, a data layer, an application layer and a presentation layer:

The data preparation layer includes the production of 3D assembly work instructions in combination with the assembly process plan and MBD assembly digital model, and the lightweight processing of the 3D model. MBD assembly digital model, determine assembly view and process diagram sequence, form assembly animation or exploded view document.

The data layer is composed of 3D assembly work instruction data and lightweight 3D model data generated by the data preparation layer. The 3D assembly work instruction data in the data layer includes assembly animation, assembly documents, assembly quality and assembly progress, and lightweight 3D model data. The data includes geometric information and attribute information, and the 3D assembly work instruction data is associated with the corresponding lightweight 3D model. The association methods include two modes: manual association and automatic association. The steps of automatic association are automatic classification, retrieval, sorting and association.

The application layer includes a business management module, a user management module and a data management module. The business management module includes publishing process management, change management and progress management for the 3D assembly operation instructions of the data layer. The user management module includes user rights management, data management The module includes the display, centralized storage and security management of 3D models and 3D assembly work instructions. In addition, the publishing process of 3D assembly work instructions in the application layer includes production, entry, review, approval and release, and different operations correspond to users with different permissions. The user management module in the application layer also includes platform business notifications, news push, collection and space Management, security management in the application layer includes data encryption, log auditing, authentication, backup and disaster recovery.

The presentation layer realizes centralized display based on the application layer, based on the PC platform of B/S architecture and C/S architecture, mobile APP and VR, including 3D model enlargement, reduction, translation, roaming, rendering, hiding and cutting, and Play, pause, double speed, zoom in and zoom out of 3D assembly animation.

As shown in Figure 2, the workflow of a 3D assembly operation instruction data management platform includes the following steps:

6.1 Compile 3D assembly work instructions and lightweight 3D models;

6.2 Associate the 3D assembly work instruction to the corresponding 3D model;

6.3 Upload the 3D assembly work instruction and 3D model to the 3D assembly work instruction data management platform to realize the functions of publishing business management, instruction book and model display, data centralized storage, data security management and user service management.

Among them, as shown in Figure 3, the production process of the 3D assembly work instruction in the data preparation layer includes the following steps:

7.1 Determine the assembly process plan and MBD assembly digital model: Determine the assembly process plan including assembly sequence planning and assembly path planning. The assembly sequence planning combines the model geometry to obtain the best assembly sequence by manual disassembly, and the assembly path planning is drawn up through the process process. Process route, and finally get the assembly process plan. MBD assembly digital model is composed of three parts: design model, annotation and attribute, including product design information, process information and manufacturing information;

7.2 Create Assembly Views: Create assembly views for processes and steps. The assembly view represents a snapshot of the model in the view area, saves attributes and all visible parts in the model animation, and the view records the camera position, the position of the parts in the exploded view, and the view area. properties, adjust the viewing angle as needed, and select an appropriate angle to clearly express the component information;

7.3 Create process diagrams: Create process diagrams for the created assembly views, add dimension information, tolerance information and annotation information on the assembly views, add cut planes as needed to observe the internal structure, use exploded views or through the Digger function in different areas of the model Zoom in, peel off the character to view the internal structure, check the process diagram after creation, including view integrity check, correctness check and view sequence check, and modify improper diagrams in time;

7.4 Making assembly animation: The assembly animation is formed by blanking keyframes, viewing angle keyframes, position keyframes, hotspot keyframes, shape keyframes and cutting plane keyframes. The computer automatically interpolates to complete the transition of the intermediate state. First, the assembly parts are grouped , and then create a split animation, and finally convert the split animation into an assembly animation and make appropriate adjustments. The assembly animation forms include executable programs, avi videos, and screen recording software recording videos;

7.5: Output 3D assembly work instructions: The output of 3D assembly work instructions is to arrange text descriptions, process diagrams and assembly animations according to a certain layout, and associate them with the corresponding 3D model components.

As shown in Figure 4, the lightweight process of the 3D model in the data preparation layer includes the following steps:

8.1 The origin coordinates of the unified model;

8.2 Coding and coloring of unified components;

8.3 Attribute information of the normalized model;

8.4 Geometry conversion and rendering processing;

8.5 Output lightweight model.

In addition, in this embodiment, the optimization of geometric transformation at the micro level adopts parameterized geometric description, that is, the weight reduction of components is carried out by means of parameterization; the optimization at the macro level adopts the merging of similarity primitives, that is, retaining a certain primitive data, directly refer to the primitives in other locations and record the spatial coordinates; the optimization of rendering processing at the micro level adopts multiple LODs (Levels of Detail), and the fineness of the model is related to the distance, thereby accelerating the rendering speed of primitives and reducing storage; The macro-level optimization adopts occlusion culling and batch drawing. Occlusion culling only draws visible primitives, reducing the number of rendering primitives. Batch drawing combines objects with the same state into one draw call, balancing CPU and GPU load, and improving rendering. Fluency.

The three-dimensional assembly operation instruction data management platform and its workflow of the present invention realize the centralized storage of the three-dimensional assembly operation instruction and the lightweight three-dimensional model, avoid information islands and document loss, and realize the synchronous change of documents and the unification of historical versions. ;Realized the association and centralized display of 3D assembly work instructions and lightweight 3D models, realized the integration of assembly instructions and models, improved query efficiency, and made publicity and display more convenient; Standardized the management of 3D assembly work instructions, Including the business release process, user rights, change and security management, etc. The traditional paper-based 2D assembly process documents are replaced by 3D assembly operation instructions with a higher degree of visualization and more intuitiveness, which improves the efficiency of assemblers to obtain assembly information ; The 3D model is lightweight, and the lightweight model realizes fast and smooth response during model display and operation.

Claims (10)

1. A three-dimensional assembly work instruction data management platform comprises a data preparation layer, a data layer, an application layer and a presentation layer, and is characterized in that: the data preparation layer is used for manufacturing a three-dimensional assembly operation instruction book by combining an assembly process scheme and an MBD assembly digital model, and carrying out lightweight processing on the three-dimensional model; the data layer consists of three-dimensional assembly operation instruction data generated by the data preparation layer and light three-dimensional model data; the application layer comprises a service management module, a user management module and a data management module, wherein the service management module is used for performing issuing process management, change management and progress management on the three-dimensional assembly operation instruction book of the data layer, the user management module is used for managing the authority of a user, and the data management module is used for displaying, intensively storing and safely managing the three-dimensional model and the three-dimensional assembly operation instruction book; the presentation layer enables a centralized presentation based on the application layer.

2. The three-dimensional assembly work instruction data management platform according to claim 1, characterized in that: the manufacturing of the three-dimensional assembly operation instruction in the data preparation layer is based on an assembly process scheme of the three-dimensional assembly and an MBD assembly digital model thereof, an assembly view and a process diagram sequence are determined, an assembly animation or explosion view document is formed, and the data preparation layer further comprises the step of carrying out light weight processing on the three-dimensional model.

3. The three-dimensional assembly work instruction data management platform according to claim 1, characterized in that: the three-dimensional assembly operation instruction data in the data layer comprises assembly animation, assembly documents, assembly quality and assembly progress, the light-weight three-dimensional model data comprises geometric information and attribute information, the three-dimensional assembly operation instruction data is associated to the corresponding light-weight three-dimensional model, the association mode comprises a manual association mode and an automatic association mode, and the automatic association comprises the steps of automatic classification, retrieval, sorting and association.

4. The three-dimensional assembly work instruction data management platform according to claim 1, characterized in that: the release process of the three-dimensional assembly operation instruction book in the application layer comprises making, inputting, auditing, approving and releasing, different operations correspond to different authority users, the user management module in the application layer further comprises platform service notification, news pushing, collecting and space management, and the safety management in the application layer comprises data encryption, log auditing, authentication, backup and disaster recovery.

5. The three-dimensional assembly work instruction data management platform according to claim 1, characterized in that: the presentation layer comprises a PC platform, a mobile APP and a VR based on a B/S framework and a C/S framework respectively, and comprises the steps of amplifying, reducing, translating, roaming, rendering, hiding and sectioning of a three-dimensional model, and playing, pausing, multiplying, amplifying and reducing of a three-dimensional assembly animation.

6. A workflow of the three-dimensional assembly work instruction data management platform according to claim 1, wherein: the method comprises the following steps:

6.1 compiling a three-dimensional assembly operation instruction book and a lightweight three-dimensional model;

6.2 associating the three-dimensional assembly operation instruction to the corresponding three-dimensional model;

and 6.3, uploading the three-dimensional assembly operation instruction and the three-dimensional model to a three-dimensional assembly operation instruction data management platform, so as to realize the functions of issuing business management, instruction and model display, data centralized storage, data safety management and user service management.

7. The workflow of the three-dimensional assembly work instruction data management platform according to claim 6, wherein: the manufacturing process of the three-dimensional assembly operation instruction in the data preparation layer comprises the following steps:

7.1 determining an assembly process scheme and an MBD assembly digital model: determining an assembly process scheme comprising assembly sequence planning and assembly path planning, wherein the assembly sequence planning is combined with a model geometric structure to obtain an optimal assembly sequence in a manual guidance disassembly mode, the assembly path planning draws a process route through process procedures to finally obtain the assembly process scheme, and an MBD assembly digital model consists of three contents of a design model, comments and attributes and comprises design information, process information and manufacturing information of a product;

7.2 create assembly view: creating an assembly view for the process and the step, wherein the assembly view represents a snapshot of the model in a view area, the attributes and all visible parts in the model animation are saved, the view records the position of a camera, the position of the part in an explosion view and the attributes of the view area, the view angle is adjusted according to the requirement, and a proper angle is selected to clearly express the information of the parts;

7.3 creating a process diagram: creating a process diagram for the created assembly view, adding dimension information, tolerance information and annotation information on the assembly view, adding a cutting plane as required to observe an internal structure, amplifying in different areas of the model by using an explosion diagram or by a Digger function, peeling off a role to observe the internal structure, and checking after the process diagram is created, wherein the checking comprises view integrity checking, correctness checking and view sequence checking, and improper diagrams are modified in time;

7.4, making an assembly animation: the assembly animation is formed by blanking key frames, view angle key frames, position key frames, hot spot key frames, shape key frames and sectioning surface key frames, the transition change of the intermediate state is completed by computer automatic interpolation, firstly, the assembly parts are grouped, then the assembly animation is created, finally, the assembly animation is converted into the assembly animation and is properly adjusted, and the form of the assembly animation comprises an executable program, an avi video and a screen recording software recording video;

7.5: outputting a three-dimensional assembly operation instruction book: the output of the three-dimensional assembly operation instruction is to arrange the character description, the process diagram and the assembly animation according to a certain layout and associate the character description, the process diagram and the assembly animation to the corresponding three-dimensional model part.

8. The workflow of the three-dimensional assembly work instruction data management platform according to claim 6, wherein: the process for lightening the three-dimensional model in the data preparation layer comprises the following steps:

8.1 unifying the origin coordinates of the model;

8.2 coding and coloring of uniform parts;

8.3 regulating the attribute information of the model;

8.4 geometric transformation and rendering processing;

8.5 output lightweight model.

9. The workflow of the three-dimensional assembly task instruction data management platform according to claim 8, wherein: the optimization of geometric transformation at a microscopic level adopts parametric geometric description, namely, the lightweight of the component is carried out by a parametric method; and (3) optimizing at a macroscopic level by adopting similar primitive combination, namely, reserving certain primitive data, directly referencing the primitives at other positions and recording space coordinates.

10. The workflow of the three-dimensional assembly task instruction data management platform according to claim 9, wherein: multiple LODs (levels of detail) are adopted for optimization of rendering processing at a microscopic level, and the model fineness is related to the distance, so that the primitive rendering speed is accelerated, and the storage is reduced; and in the macro level, the optimization adopts a shielding elimination and batch drawing mode, only visible primitives are shielded and eliminated, the number of rendering primitives is reduced, objects with the same state are merged into one drawing call in batch drawing, the loads of a CPU (Central processing Unit) and a GPU (graphics processing Unit) are balanced, and the rendering smoothness is improved.

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